Sudsy Space: Second Home Holland Park by selgascano
The first step in building the courtyard roofing was the installation of steel supports at the edge of the yard. Along the existing brick walls, two horizontal steel angles were attached. Where there is no wall, the architects have added trussed girders in order to complete the framing of the courtyard. After this, the ETFE sheeting was stretched between the steel supports to form the topmost layer of the synthetic roof, then the lower layer was stretched out as well, using polypropylene straps to fix it to the supports. Finally, the steel profiles were sealed on their upper, exterior sides.
The highlight: as needed, soap suds can be blown into the interstitial space with a foam machine. It takes about 20 minutes to completely fill the two-layer roof with sudsy bubbles. An added benefit is that the suds also work as insulation and soundproofing. The effect lasts about a day.
For a video and pictures of the installation process, go to: